Figure 1.

Network model for the retinal vasculature. The vasculature is divided into five main compartments: the CRA, arterioles, capillaries, venules, and the CRV. Each compartment includes resistances (R) and capacitances (C). The intraocular segments are exposed to the IOP, the retrobulbar segments are exposed to the RLTp, and the translaminar segments are exposed to an external pressure that depends on the internal state of stress within the lamina cribrosa (gray shaded area). Diameters of venules and intraocular and translaminar segments of the CRA and CRV are assumed to vary passively with IOP, whereas arterioles are assumed to be vasoactive.